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Income Taxes - Additional Information (Detail)
$ / shares in Units, MOP$ in Millions
 1 Months Ended 12 Months Ended
Apr. 30, 2020
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
$ / shares
Dec. 31, 2018
USD ($)
$ / shares
Dec. 31, 2020
MOP (MOP$)
Income Taxes          
Tax exemption period   5 years      
Complementary tax rate 12.00% 12.00%      
Amount of complementary tax exemption     $ 77,700,000 $ 96,800,000  
Amount of complementary tax exemption per share | $ / shares     $ 0.73 $ 0.90  
Annual complementary tax to be paid   $ 1,600,000 $ 1,600,000 $ 1,600,000 MOP$ 12.8
Recognized foreign tax credit tax benefit net of valuation allowance     32,900,000 82,800,000  
Increase (decrease) in valuation allowance for deferred tax assets   (227,300,000) 115,500,000    
Tax benefits (loss) realized   1,200,000 5,700,000 2,000,000.0  
FTC carryforwards expired   530,400,000      
Foreign tax credit carryforwards   2,500,000,000      
Disallowed interest carryforwards not subject to expiration   604,200,000      
Valuation allowance   2,986,684,000 2,759,431,000    
U.S. and foreign uncertain tax positions that increase NOL and foreign tax credit carryforward deferred tax assets   107,700,000 104,300,000 99,500,000  
Uncertain tax positions, noncurrent   0 0 0  
Unrecognized tax benefits that would impact the effective tax rate if recognized   40,200,000 36,600,000 31,000,000.0  
Recognized interest and penalties   0 0 0  
Decrease in unrecognized tax benefits due to expiration of the statute of limitations   3,695,000 4,161,000 4,692,000  
Maximum          
Income Taxes          
Unrecognized tax benefit increase resulting in tax settlements   1,400,000      
Tax Credit Carryforward Expiry In 2021          
Income Taxes          
Foreign tax credit carryforwards   540,300,000      
Tax Credit Carryforward Expiry In 2023          
Income Taxes          
Foreign tax credit carryforwards   756,000,000.0      
Tax Credit Carryforward Expiry In 2024          
Income Taxes          
Foreign tax credit carryforwards   710,700,000      
Tax Credit Carryforward, Expires at 2025          
Income Taxes          
Foreign tax credit carryforwards   47,200,000      
Tax Credit Carryforward, Expires at 2027          
Income Taxes          
Foreign tax credit carryforwards   486,200,000      
Wynn Macau          
Income Taxes          
Decrease in unrecognized tax benefits due to expiration of the statute of limitations   $ 3,700,000 4,200,000 4,700,000  
U.S.          
Income Taxes          
Tax credit of "net" foreign source income   21.00%      
Foreign tax credit carryforwards   $ 2,540,400,000 3,070,914,000    
Tax loss carryforward   197,200,000      
Valuation allowance   $ 2,812,808,000 2,604,497,000    
Foreign          
Income Taxes          
Gaming tax   35.00%      
Tax loss carryforward   $ 378,600,000 376,800,000 $ 340,000,000.0  
Valuation allowance   173,876,000 $ 154,934,000    
State          
Income Taxes          
Tax loss carryforward   $ 51,600,000